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Recognised as Colour

#51550A

  • #51550A
  • Yellow
  • Dark
  • Nearest: Dark olivegreen

#51550A is a yellow with RGB values 81, 85, 10 and HSL 63°, 79%, 19%. It is a dark colour, so white text on it reaches 7.9:1 contrast (AAA for normal text). The nearest named colour is Dark olivegreen.

Colour values

#51550A#51550A
HEX#51550A
RGBrgb(81, 85, 10)
RGB (0–1)0.3176, 0.3333, 0.0392
RGB percentages31.8%, 33.3%, 3.9%
HSLhsl(63.2, 78.9%, 18.6%)
HSV / HSBhsv(63.2, 88.2%, 33.3%)
CMYK4.7%, 0%, 88.2%, 66.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,330,186
CSS custom property--colour: #51550A;

Brightness & contrast

Relative luminance0.08268WCAG 2.x, 0 is black and 1 is white
Perceived brightness78.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.91:1
Contrast with white7.91:1WCAG normal text: AAA
Contrast with black2.65:1WCAG normal text: Fail
Greyscale equivalent#4F4F4F
Inverted#AEAAF5

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5C5000no red cones; affects about 1% of men; ΔE 8.8 from the original
Deuteranopia#5C5212no green cones; the most common form, about 1% of men; ΔE 7.9 from the original
Tritanopia#574F48no blue cones; rare, and affects men and women equally; ΔE 36.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text7.91:1WCAG large text: AAA
Contrast with black, large text2.65:1WCAG large text: Fail

Named colours

Dark olivegreen · ΔE 13.6Olive · ΔE 24.9Olivedrab · ΔE 28.4Dark green · ΔE 32.2Saddle brown · ΔE 37.9Sea green · ΔE 38.1
Nearest named CSS colourDark olivegreen (#556B2F)ΔE 13.57, a distinctly different colour
Hue familyyellow
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#0E0A55
Analogous#55330A, #2C550A
Triadic#0A5155, #550A51
Split complementary#0A2B55, #340A55
Tetradic#0A5534, #0E0A55, #550A2B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E0E942
Lighter +30%#D3DE1A
Lighter +20%#A8B015
Lighter +10%#7C830F
Darker −10%#262705
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#5A5F00
Less saturated −25%#464916

Channel breakdown

R81
G85
B10
Red81 (31.8%)
Green85 (33.3%)
Blue10 (3.9%)
Hue63.2°
Saturation (HSL)78.95%
Lightness18.63%
Dominant channelGreen
Hex per channelR 51 · G 55 · B 0A

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Every value on this page was computed from “51550a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.